21701648

素因数分解:

$2^4\times {\mathrm{19}}^1\times {\mathrm{71387}}^1$

素因数の和:71414

約数の個数: 20

約数和(自身を含む): 44260560

約数和(自身を除く): 22558912

約数列:

[1, 2, 4, 8, 16, 19, 38, 76, 152, 304, 71387, 142774, 285548, 571096, 1142192, 1356353, 2712706, 5425412, 10850824, 21701648]

約数ペア:

[(1, 21701648), (2, 10850824), (4, 5425412), (8, 2712706), (16, 1356353), (19, 1142192), (38, 571096), (76, 285548), (152, 142774), (304, 71387)]